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If the scale changes, the analyzer clears the waterfall display and displays the next traces using the new scale. This affects only the display, not the measurement. The cleared traces are still kept in the waterfall buffer. Scale references If you do not want to use autoscaling, you can select top, center, or bottom scale reference. The analyzer keeps this reference, regardless of your choice of y-units/division. For example, if you are viewing frequency response data on the active trace, setting a top reference of 20 dB means that the top of the line in the display graticule is always at +20 dB.

Use channels 1 and 2 to measure one point, and channels 3 and 4 to measure the other (with the horizontal transducers connected to channels 1 and 3). You must modify the last few instructions in step 2, as shown below: Press [CHANNELS 1 2 4] to highlight 4 (rather than 2), then press [REF CHANS 1 1,3] to highlight 1,3. Press [Disp Format] [UPPER/LOWER]. Activate traces A and B, then press [Meas Data] [ALL CHANNELS] [ORBITS */*]. Activate trace B, then press [CHANNEL 1 2 3 4] to highlight 3.

The analyzer keeps this reference, regardless of your choice of y-units/division. For example, if you are viewing frequency response data on the active trace, setting a top reference of 20 dB means that the top of the line in the display graticule is always at +20 dB. If you change the Y per div value, the top of the scale remains at +20 dB and the bottom of the scale changes accordingly. Input range tracking You can use input range tracking to reference the scale to the input range currently in use.

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Agilent 35670A Analyzer (operators)


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